[DETAIL] Basic material: steel Optional specifications. 5pcs Product advantages: high hardness, durable, not easy to wear Product size: 3*140mm ，4*160mm File specifications. A pack of 5, including flat files, semi-round files, triangular files, square files, round files, knife-shaped files Scope of application: jade grinding, wood carving grinding, ceramic grinding, metal grinding Scope of application. Grinding and polishing of various stainless steel / copper / iron / aluminum / plastic and other metal and non-metal materials, is a good accessory for surface grinding treatment Handle: plastic wrapping process [ATTRIBUTES] - Electric: No - Hign-concerned Chemical: None - Type: others - Electric: No - Hign-concerned Chemical: None - Type: others - Origin: Mainland China